Biology for nursing entrance exams worksheet with answers

Free printable Biology for nursing entrance exams worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy

Which pigment absorbs light energy for photosynthesis?

  1. AKeratin
  2. BHaemoglobin
  3. CChlorophyll
  4. DMelanin
2.Easy

What are the bacteria called that normally live on the skin and in the gut without causing disease?

  1. APathogens
  2. BPrions
  3. CVectors
  4. DNormal flora
3.Easy

What is a phenotype?

  1. AThe observable trait, such as eye colour
  2. BThe order of bases in a gene
  3. CThe pair of alleles that an organism carries for a gene
  4. DThe number of chromosomes in a gamete
4.Medium

What is a mutation?

  1. AA change in the number of cells in a tissue
  2. BThe normal copying of DNA before division
  3. CThe pairing of homologous chromosomes
  4. DA change in the base sequence of DNA
5.Medium

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

  1. AIt makes DNA from the virus's RNA
  2. BIt breaks down the host's ribosomes
  3. CIt makes RNA from the host's DNA
  4. DIt makes proteins from the virus's DNA
6.Medium

A person catches chickenpox once and does not usually become ill with it again. Why?

  1. AMemory cells give a faster, stronger response the next time
  2. BAntibodies from the first infection turn into new viruses
  3. CThe virus stays in the blood and kills new viruses
  4. DThe skin becomes thicker after the first infection
7.Hard

A farmer's crops grow poorly in soil lacking nitrates. Why do plants need nitrogen?

  1. ATo make amino acids, proteins and nucleic acids
  2. BTo make glucose during photosynthesis
  3. CTo absorb more carbon dioxide through the stomata
  4. DTo build cellulose cell walls
8.Hard

A study finds that coffee drinkers have more lung cancer. Later it is found that coffee drinkers in the study also smoked more. What is smoking in this study?

  1. AThe dependent variable
  2. BA confounding variable
  3. CA placebo
  4. DThe control group

Answer key

  1. 1. C · Chlorophyll
  2. 2. D · Normal flora
  3. 3. A · The observable trait, such as eye colour
  4. 4. D · A change in the base sequence of DNA
  5. 5. A · It makes DNA from the virus's RNA
  6. 6. A · Memory cells give a faster, stronger response the next time
  7. 7. A · To make amino acids, proteins and nucleic acids
  8. 8. B · A confounding variable

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